Improvement in bung-cutters



UNITED Srarns vCORNELIUS VAN DERZEE, OF ALBANY, NEW YORK, ASSIGNOR TO HIMSELF AND WILLIAM T. VALENTINE, OF SAME PLACE.

IMPROVEMENT iN BUNG-CUTTERS.

Specification forming part of Letters Patent No. 35,711 M, dated June 24, 1862.

T0 all whom it may concern:

Be itknown that I, CoaNELIUs VAN DERZEE, of the city of Albany, State of New York, have invented a new and useful lPool or Machine for Cutting out Bungs of any Size for Oasks, Barrels, or Hogsheads from Plank or other Suitable Material; and I declare the following` specification, with the .drawings hereto appended as part of the same, to be'a full and `perfect description of my invention.

Figure l represents a plan view of the tool. Fig. 2 is a perspective View of the same.

Similar letters in the figures represent the same parts of the apparatus.

A is a mandrel or shaft, having at a a collar and threaded neck for the purpose of screwing'it into the driving-pulley shaft of a lathe. At its other end, b, it is provided with the usual centering-point to steady its movement. Near this end of the mandrel it passes through and is secured to a bar, B, curved as shown in the drawings, and iitted at its extremities or arms to carry sliding blocks 0 C, of similar form to each other. These blocks have rising from them ears l) D with slots in them to carry and guide the cutter-bars E E, .the eutters forming the extremities of the bars. These slots are so ranged as to guide the cutters as they slide through them in lines oblique to the direction of the axis of the mandrel, the line of movement ol' the cutters being` eqnidistant from the said axis, .so that in a plane at right angles to the axis they may eut in the same circular track, the Obliquity of their line of movement being such as to give the bevel required in the form of bungs.

The size of the bungs diametrically is regulated by the movement of the sliding blocks G C to and from the mandrel. Vhen close to it, as shown in the drawings, the cutters form the smallest-sized bungs; when moved outward to the ends of the bars B, the largestsized. Set-screws (one shown at S) hold the blocks to their place. v

The back ends of the cutter-bars E E are bent outward. and then backward parallel with the mandrel, for the purpose of inclosing within them a cylinder, G, fitted to move along the mandrel. Attached to the back end of E E, and lying at right angles to the mandrel, are forked guide-bars K K, attached to one oi" them, and L L to the other. These bars lie and operate within a groove cut around the periphery of the cylinder G, so that by the movement of the cylinder along the mandrel the cutter-bars are forced forward or drawn backward through the guides D.

rlhe cylinder can be operated by ahandlever or by any of the usual automatic apparat-us of lathes.

P P, Fig. 1, represents a plank seen edgewise, with the line of direction of the cutters through it, cutting out from it the bung M.

Any sort of cutter can be employed which is found to operate to advantage. Upon one of them a spur-cutter is affixed at f for the purpose of trimming or beveling off the inner edge of the bung at r.

An inspection of the drawings will show the operation of the tool. The plank P, being placed upon the center b and held at right yangles to the axis of the mandrel, the tool is set in motion. To operate the cutters, the cylinder G is pressed forward, when the guidebars K and L, with their cutters, traverse the plank in the lines e e and shape and eut out the bung M. As the cutters progress the bent ends of their bars are required to move outward from the mandrel, as shown by the light lines in Fig. l, which exhibit the position of the cutter-bars when they have passed through the plank M. This is permitted by the use of the forked form of the bars K and L, whose upper and lower limbs are parallel with each other, so as to slide accurately and smoothly in the groove of cylinder G. This arrangement also permits the movements by which large or small bungs can be cut upon the adjustment of the sliding pieces C C, as above described.

Vhat I claim, and desire to secure by Letters Patent as my invention, is-

rIhe combination and arrangement, above described, of the following apparatus forming a tool or machine for cutting out from Vsuitable material bungs of any desired size,

viz: mandrel A, fitted for rapid revolution with its bar B, the adjustable sliding blocks O O, fitted as guides to the cutter-bars, the cutter-bars E E, with their cutters and their guide-bars K and L, and sliding cylinder G with its groove for the guide-bars, the Whole substantially as set forth in the above specication.

CORNELIUS VAN DERZEE. "Witnesses:

E. J. MILLER, ItIcHD. VARICK DE WITT. 

